The Shimano XTR 12-speed Long Cage Rear Derailleur offers enhanced shifting performance with a silent drivetrain, thanks to reduced tension in low gear and a bumper on the pulley cage. It features larger 13T pulleys for better efficiency and chain management, and is compatible with Shimano’s new 12-speed cassettes for an extended range. The derailleur includes a low-profile design, Shimano Shadow RD+, and accommodates a low sprocket combination of 10-51T.